Home / 8,543.30-11,790.18-6,443.78

Finding the Fourth Proportional to 8,543.30, 11,790.18 and 6,443.78

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Solution

The fourth proportional to 8,543.30, 11,790.18 and 6,443.78 is: 8,892.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.30 : 11,790.18 = 6,443.78 : x
  2. Step 2: Convert to fraction form
    8,543.30/11,790.18 = 6,443.78/x
  3. Step 3: Cross multiply
    8,543.30x = 11,790.18 × 6,443.78
  4. Step 4: Simplify right side
    8,543.30x = 75,973,326.08
  5. Step 5: Solve for x
    x = 75,973,326.08/8,543.30
  6. Step 6: Final answer
    x = 8,892.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.